2-Cyano-3,4-difluoro-5-(trifluoromethoxy)pyridine
4-Cyano-3-(trifluoromethoxy)pyridine-5-sulfonamide
3-Cyano-5-(trifluoromethoxy)pyridine-4-sulfonamide
4-Cyano-2,3-difluoro-6-(trifluoromethoxy)pyridine
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